CN1071597C - Method for regenerating catalyst - Google Patents
Method for regenerating catalyst Download PDFInfo
- Publication number
- CN1071597C CN1071597C CN96122167A CN96122167A CN1071597C CN 1071597 C CN1071597 C CN 1071597C CN 96122167 A CN96122167 A CN 96122167A CN 96122167 A CN96122167 A CN 96122167A CN 1071597 C CN1071597 C CN 1071597C
- Authority
- CN
- China
- Prior art keywords
- catalyst
- hydrogen
- reburner
- steam
- absorption tower
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 239000003054 catalyst Substances 0.000 title claims abstract description 37
- 238000000034 method Methods 0.000 title claims abstract description 16
- 230000001172 regenerating effect Effects 0.000 title abstract 3
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 20
- 239000001257 hydrogen Substances 0.000 claims abstract description 20
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 17
- 238000010521 absorption reaction Methods 0.000 claims abstract description 8
- 230000000694 effects Effects 0.000 claims abstract description 6
- 238000010438 heat treatment Methods 0.000 claims abstract description 3
- 150000002431 hydrogen Chemical class 0.000 claims description 5
- 238000006477 desulfuration reaction Methods 0.000 claims description 4
- 230000023556 desulfurization Effects 0.000 claims description 4
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 claims description 4
- 238000011084 recovery Methods 0.000 claims description 4
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 claims description 3
- 229910000027 potassium carbonate Inorganic materials 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 2
- 230000006835 compression Effects 0.000 claims 1
- 238000007906 compression Methods 0.000 claims 1
- 239000002994 raw material Substances 0.000 abstract description 7
- 238000002407 reforming Methods 0.000 abstract description 7
- 229930195733 hydrocarbon Natural products 0.000 abstract description 6
- 150000002430 hydrocarbons Chemical class 0.000 abstract description 6
- 238000000629 steam reforming Methods 0.000 abstract description 4
- 230000004087 circulation Effects 0.000 abstract description 2
- 150000003568 thioethers Chemical class 0.000 abstract 2
- 239000004215 Carbon black (E152) Substances 0.000 abstract 1
- 230000003009 desulfurizing effect Effects 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 abstract 1
- TYJJADVDDVDEDZ-UHFFFAOYSA-M potassium hydrogencarbonate Chemical compound [K+].OC([O-])=O TYJJADVDDVDEDZ-UHFFFAOYSA-M 0.000 abstract 1
- 231100000572 poisoning Toxicity 0.000 description 6
- 230000000607 poisoning effect Effects 0.000 description 6
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 5
- 239000007789 gas Substances 0.000 description 4
- 230000008929 regeneration Effects 0.000 description 3
- 238000011069 regeneration method Methods 0.000 description 3
- 229910052717 sulfur Inorganic materials 0.000 description 3
- 239000011593 sulfur Substances 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 2
- 239000005864 Sulphur Substances 0.000 description 2
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 2
- 230000004913 activation Effects 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 239000002574 poison Substances 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000001839 systemic circulation Effects 0.000 description 1
Landscapes
- Catalysts (AREA)
- Hydrogen, Water And Hydrids (AREA)
Abstract
The present invention relates to a method for regenerating a catalyst. After a light hydrocarbon steam reforming catalyst is positioned by sulfides, steam is still supplied to a device, raw materials are not supplied to the device, and the device is only used for hydrogen circulation. After compressing, heating and desulfurizing operation, hydrogen and the steam jointly enter a reforming furnace to control certain steam flow and temperature of the reforming furnace and enter an absorption tower, and the sulfides are absorbed by a potassium carbonate solution in the absorption tower. The catalyst activity is restored, and the loss of stopping the steam of the device and replacing the catalyst is avoided. The present invention has the advantages of simple technological process, convenient operation, short regenerating time of the catalyst, and reduction of production cost.
Description
The invention belongs on device for producing hydrogen and regenerate by the technical process of the lighter hydrocarbons steam reforming catalysts of sulfur poisoning.
Generally use the lighter hydrocarbons steam reforming catalysts at the device for producing hydrogen of making raw material with light oil or refinery gas, the gas maker of synthetic ammonia, as model catalyst such as Z402/Z405, Z405G/Z409, Z403H, sulfide in the raw material is easy to cause poisoning to these catalyst, and the catalyst after the poisoning promptly loses activity.Traditional processing method is a catalyst changeout or catalyst drawn off from reactor send catalyst plant regeneration back to more.The shortcoming of these methods is to need handle assembly to stop, and more catalyst changeout causes device to stop work for a long time, increases catalyst costs.
Purpose of the present invention is intended to overcome the shortcoming of prior art, provide a kind of on process units the cure method of the lighter hydrocarbons steam reforming catalysts that thing poisons of regeneration.
Method of the present invention is achieved in that after the discovery reforming catalyst cures the thing poisoning, promptly stops into raw material, and device changes the hydrogen circulation, sees shown in the accompanying drawing.After pressurizeing, the hydrogen (8) that compressor (2) comes out enters heating furnace (3) to absorption tower (7), keep the active temperature of desulfurization reactor (4), the hydrogen and the water vapour (5) that come out from desulfurization reactor (4) are mixed into reburner (6), through absorption tower (7), hydrogen sulfide is absorbed by solution of potassium carbonate in tower, and the absorption tower comes out not have the hydrogen of hydrogen sulfide to enter compressor to carry out the hydrogen systemic circulation.
Described compressor, outlet pressure 1.8～2.8MPa, the steam air speed 1500～6000h of reburner
-1, control H
2O/H
27～10, the operating temperature of reburner: enter the mouth 500～520 ℃, the outlet 780～820 ℃.During the regeneration of catalyst with 6～13 hours.
Described hydrogen, purity＞60% (v).
The hydrogen of institute of system loss is introduced by outer device and is replenished.
6～13 hours recovery times of catalyst.
Adopt regenerated catalyst of the present invention, process units need not stop vapour, only stops into raw material and regenerates 6～13 hours rear catalyst activation recoverings.Avoid device to stop the loss that vapour causes, prolonged the service life of catalyst.
Accompanying drawing is the process chart of regenerated catalyst.
Below in conjunction with embodiment technical scheme of the present invention is done further statement.
Embodiment 1
Device for producing hydrogen uses Z402/Z405 lighter hydrocarbons reforming catalyst.After finding the catalyst sulfur poisoning, stop using dry gas, reforming catalyst is regenerated compressor delivery pressure control 2.3MP3,505 ℃ of reburner inlet controls, 800 ℃ of reburner controls of export, H
2O/H
2Control 8, reburner steam air speed control 4800h
-1Put sulphur after 8 hours and finish, catalyst activity is restored, and recovers raw material after 10 hours, and product is qualified immediately.
Embodiment 2
Device for producing hydrogen uses Z403H lighter hydrocarbons reforming catalyst.After finding the catalyst sulfur poisoning, stop using dry gas, reforming catalyst is regenerated compressor delivery pressure control 2.6MPa, 515 ℃ of reburner inlet controls, 810 ℃ of reburner controls of export, H
2O/H
2Control 9, reburner steam air speed control 5000h
-1Put sulphur after 10 hours and finish, catalyst activity is restored, and recovers raw material after 12 hours, and product is qualified immediately.
Claims (5)
1. the method for a regenerated catalyst, it is characterized in that entering heating furnace (3) after hydrogen (8) pressurization that compressor (2) comes out to absorption tower (7), keep the active temperature of desulfurization reactor (4), the hydrogen and the water vapour (5) that come out from desulfurization reactor (4) are mixed into reburner (6), through absorption tower (7), sulfide is absorbed by solution of potassium carbonate in tower, the hydrogen of sulfide is come out not have in the absorption tower, enter compressor and carry out the hydrogen compression, the hydrogen of institute of system loss is introduced by outer device and is replenished (1).Compressor delivery pressure 1.8～2.8MPa, the steam air speed 1500～6000h of reburner
-1, H
2O/H
2Be 7～10,500～520 ℃ of the inlet temperatures of reburner, 780～820 ℃ of outlet temperatures, 6～13 hours recovery times of catalyst.
2. by the described method of claim 1, the hydrogen of institute of system loss is introduced by outer device and is replenished.
3. by the described method of claim 1, the purity of hydrogen＞60% (v).
4. press the described method of claim 1, compressor delivery pressure 2.3MPa, the steam air speed 4800h of reburner
-1, H
2O/H
2Be 8,505 ℃ of the inlet temperatures of reburner, 800 ℃ of outlet temperatures, 8 hours recovery times, catalyst activity is restored.
5. press the described method of claim 1, compressor delivery pressure 2.6MPa, the steam air speed 5000h of reburner
-1, H
2O/H
2Be 9,515 ℃ of the inlet temperatures of reburner, 810 ℃ of outlet temperatures, 10 hours recovery times, catalyst activity is restored.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN96122167A CN1071597C (en) | 1996-12-09 | 1996-12-09 | Method for regenerating catalyst |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN96122167A CN1071597C (en) | 1996-12-09 | 1996-12-09 | Method for regenerating catalyst |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1184711A CN1184711A (en) | 1998-06-17 |
| CN1071597C true CN1071597C (en) | 2001-09-26 |
Family
ID=5127137
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN96122167A Expired - Fee Related CN1071597C (en) | 1996-12-09 | 1996-12-09 | Method for regenerating catalyst |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1071597C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100376310C (en) * | 2005-12-21 | 2008-03-26 | 中国科学院山西煤炭化学研究所 | A kind of regeneration method of vanadium-carbon-based desulfurizer |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102219185B (en) * | 2011-04-11 | 2012-10-17 | 中国石油化工股份有限公司 | Process for activating catalyst during starting of natural gas steam transforming hydrogen production device |
| WO2017078377A2 (en) * | 2015-11-05 | 2017-05-11 | 한국기계연구원 | Apparatus for removing contaminant in process discharge gas, which includes means for regenerating contaminated oxidation catalyst |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5230285A (en) * | 1975-09-03 | 1977-03-07 | Seitetsu Kagaku Co Ltd | Regeneration method of catalyst |
| JPS5235786A (en) * | 1975-09-16 | 1977-03-18 | Seitetsu Kagaku Co Ltd | Regeneration method of catalyst |
| US4260518A (en) * | 1979-05-15 | 1981-04-07 | University Of Delaware | Process for the regeneration of metallic catalysts |
-
1996
- 1996-12-09 CN CN96122167A patent/CN1071597C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5230285A (en) * | 1975-09-03 | 1977-03-07 | Seitetsu Kagaku Co Ltd | Regeneration method of catalyst |
| JPS5235786A (en) * | 1975-09-16 | 1977-03-18 | Seitetsu Kagaku Co Ltd | Regeneration method of catalyst |
| US4260518A (en) * | 1979-05-15 | 1981-04-07 | University Of Delaware | Process for the regeneration of metallic catalysts |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100376310C (en) * | 2005-12-21 | 2008-03-26 | 中国科学院山西煤炭化学研究所 | A kind of regeneration method of vanadium-carbon-based desulfurizer |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1184711A (en) | 1998-06-17 |
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| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |